INFO: task syz.3.204:7442 blocked for more than 143 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.204 state:D stack:0 pid:7442 tgid:7440 ppid:6568 task_flags:0x440140 flags:0x00000011 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1250/0x2a7c kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6960 xlog_grant_head_wait+0x3e8/0xae8 fs/xfs/xfs_log.c:267 xlog_grant_head_check+0x210/0x394 fs/xfs/xfs_log.c:-1 xfs_log_reserve+0x2a4/0x88c fs/xfs/xfs_log.c:437 xfs_trans_reserve fs/xfs/xfs_trans.c:176 [inline] xfs_trans_alloc+0x248/0x898 fs/xfs/xfs_trans.c:258 xfs_trans_alloc_inode+0x108/0x42c fs/xfs/xfs_trans.c:1076 xfs_attr_set+0x6d8/0x1020 fs/xfs/libxfs/xfs_attr.c:1098 xfs_attr_change+0x254/0x334 fs/xfs/xfs_xattr.c:128 xfs_xattr_set+0x120/0x200 fs/xfs/xfs_xattr.c:186 __vfs_setxattr+0x3d8/0x400 fs/xattr.c:200 __vfs_setxattr_noperm+0x120/0x5c4 fs/xattr.c:234 __vfs_setxattr_locked+0x1e8/0x214 fs/xattr.c:295 vfs_setxattr+0x158/0x2a8 fs/xattr.c:321 do_setxattr fs/xattr.c:636 [inline] filename_setxattr+0x20c/0x4f8 fs/xattr.c:665 path_setxattrat+0x2e8/0x320 fs/xattr.c:713 __do_sys_lsetxattr fs/xattr.c:754 [inline] __se_sys_lsetxattr fs/xattr.c:750 [inline] __arm64_sys_lsetxattr+0xc0/0xdc fs/xattr.c:750 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 INFO: task syz.3.204:7459 blocked for more than 143 seconds. Tainted: G L syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.204 state:D stack:0 pid:7459 tgid:7440 ppid:6568 task_flags:0x440040 flags:0x00800001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T) context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1250/0x2a7c kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6960 xlog_grant_head_wait+0x3e8/0xae8 fs/xfs/xfs_log.c:267 xlog_grant_head_check+0x210/0x394 fs/xfs/xfs_log.c:-1 xfs_log_reserve+0x2a4/0x88c fs/xfs/xfs_log.c:437 xfs_trans_reserve fs/xfs/xfs_trans.c:176 [inline] xfs_trans_alloc+0x248/0x898 fs/xfs/xfs_trans.c:258 xfs_trans_alloc_icreate+0x70/0x1f0 fs/xfs/xfs_trans.c:1201 xfs_create+0x410/0x998 fs/xfs/xfs_inode.c:700 xfs_generic_create+0x2e8/0x8f4 fs/xfs/xfs_iops.c:216 xfs_vn_create+0x44/0x58 fs/xfs/xfs_iops.c:299 lookup_open fs/namei.c:4440 [inline] open_last_lookups fs/namei.c:4540 [inline] path_openat+0x143c/0x3114 fs/namei.c:4784 do_filp_open+0x18c/0x36c fs/namei.c:4814 do_sys_openat2+0x11c/0x1f0 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1447 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff80008fa5b6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA-1/43: 2 locks held by getty/6350: #0: ffff0000cdcfa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800099f1e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfc8 drivers/tty/n_tty.c:2211 2 locks held by kworker/1:7/6640: #0: ffff0000f6106148 ((wq_completion)xfs-sync/loop3){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231 #1: ffff8000b2c87be0 ((work_completion)(&(&log->l_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231 3 locks held by syz.3.204/7442: #0: ffff0000c9f6c420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000dfebe4b0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #1: ffff0000dfebe4b0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x138/0x2a8 fs/xattr.c:320 #2: ffff0000c9f6c610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 3 locks held by syz.3.204/7459: #0: ffff0000c9f6c420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:499 #1: ffff0000dfebb030 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #1: ffff0000dfebb030 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{4:4}, at: open_last_lookups fs/namei.c:4537 [inline] #1: ffff0000dfebb030 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{4:4}, at: path_openat+0x868/0x3114 fs/namei.c:4784 #2: ffff0000c9f6c610 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xb4/0x898 fs/xfs/xfs_trans.c:256 =============================================